Machine for placing springs in casings.



C, P. READ. MACHINE FOR FLAClNG SPRINGS IN GASINGS.

Patented Mar. 6, 1917.

APPLICATION FlLED JUNE 26, \9lfi.

UNITED STATES PATENT OFFICE.

CHABLESIYEIRCY READ, OI CHICAGO, ILLINOIS.

Specification of Letters Patent.

MLCHIN E FOB PLACING SPRINGS IN CASINGS.

Patented Mar. 6, 191 '7.

Application filed .Tune 26, 1916. Serial N0. 108,080.

To all whom it may concern:

Be it known that I, CHARLEs PERCY READ, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Machines for Placing Springs Casings, of which the following is a specification.

By recent methods mattresses, chair seats, automobile seats and 'backs and the like are constructed by the use of a strip of sheeting having therein a plurality of coiled spring tilled pockets, the spring equipped sheetmg material being wound, arranged or located as desired in the manner and for specific purposes having no relationship to the present invention. Heretofore the small coiled springs which are inserted, one in each pocket, and which are, when manually manipulated I slippery, have been inserted with great dilficulty by hand in each pocket.

The object of this invention is to provide mechanism which may be manually manipulated, if desired,or form part of a large automatic machine whereby these springs may be readily and cheaply inserted in the cloth pockets without the operators experiencing any of the diificulties which are always present when itis attempted to insert the springs by hand.

The invention consists in a device capable of accomplishing the' foregoing objects; which can be easily and cheaply made;

which is efiicient in operation, and not readily liable to get out of order. It can sists further in the features and details of construction which will be hereafter more fully set forth in the specification and claims. l H

Referring to the drawings, in which similar numerals indicate the same parts "throughout the several views,

Figure 1 is a perspective view of mechanism illustrating this invention in its preferred form, wholly separated from the work which it isto perform.

Fig. 2 is a corresponding view illustrating. the device in working relation to the bag in which the springs shown within the device are to be inserted.

Fig. 3is a sectional Fig. 1.

The preferred form of the mechanism of this invention illustrated comprises a retaining cylinder, 10, preferably, though not necessarily, provided with a door 12 hinged be inserted. This its being, put in through View on the line 3 3,

I at l l within which a coiled spring 16 which is to be inserted in the pocket 18 defined by the seams 20 and 22 in the cloth 24 is to cylinder 10 is suitably designedfor the size of the spring 16 to be used, so that a springwill readily lie within the cylinder and may be shoved lengthwise of the cylinder by any suitable is closed by the door 12.

The piston rod 28 may be reciprocated in the piston by the manual operation of the user of thedevice, or suitable mechanism forming no part of the present invention, may be supplied to reciprocateit. Again,

.a single tube device and attached parts may be used, or :a plurality'may be placed side by side for either successive or simul-. taneous operation to place. the sprlngs 1n a plurality of pockets in the cloth device to which they are to be applied, without departing from this invention.v

Extending from the forward or left hand the opening which end of the cylinder 10as viewed in the figures, are a plurality,in the particular case here illustrated four, long flexible fingers,

34, 35, .36 and 37, fmade' ofrsome sort of,

spring material [and so shaped that, as

shown in Fig. I 1, they normally. converge together into acommon point or conical top 1 38 of, very much smaller cross-section than the cross-sectional, areaoi thetube 10 and the spring 16 with the result that this cone shaped device made of these four spring members'may be very readily inserted inside of the pocket 18 in the cloth which is to be spring filled, or into Fig. 2 of the drawing.

At suitable points on the circumferential the position lof end of the tube 10 are provided means for;v

holding the open end edge of the clothb24 to the end of the cylinder when the .parts are in the position of Fig. 2. In the paronto which the cloth 24 is hooked, as shown in Fig. 3.

In order to fill in spaces between the ad acent spring members, 34, 35, 36 and 37,

which exist particularly in proximity to the left hand end of the cylinder 10 intermediate spring members, such as 42 and 44, are provided. For convenience of illustration these are only shown in the drawings applied to the lower half of the cylinder, but ccrrespondingmembers are, preferably in practice also applied to the upper half of the cylinder, thus producing a cone of long and short spring members without openings in the sides of the cone of suflicient area so that the cloth 24 of the pocket 18 cannot readily get inside the cone and thus interfere with the operation of the piston 26 inside the cone in the manner to be hereinafter described.

In the operation of the device, assume that the parts are in the position shown in Fig. 1. The operator now inserts a spring 16 in the cylinder 10 and at theleft of the piston 26, closes the door 12 and inserts the conical end of thedevice in the pocket 18. In ordinary practice the cylinder 10 is stationary and the pocket 18 is applied over the cone and hooked thereto. The parts are now in the position shown in Fig. 2. The operator now pushes upon piston rod 28 to move piston 26 to the left, as shown in the drawings. This movement of the piston first compresses the spring and then forces it-bodily out of the cylinder 10 and into the pocket 1.8, in so doing distending the springs 3437 and 42-44 from conical "position to cylindrical position. These spring members just enumerated sufiiciently resist the movement of spring 16 by piston 26 to this new'position so that spring 16 is always under control and cannot do anything but move to the position desired 1n pocket 18. When the piston has 1n carrying out this operation, been move to a position substantially to the left of the end of cylinder 10, the operator moves piston rod 28 to the right, thus withdrawing the piston 26 into the cylinder 10. This allows the spring 16 to expand to substantially the position shown at 16 (Fig. 2), but said spring 16 is still retained inside of the springs 34-37 and 4244. The operator now unhooks the cloth 24 from the hooks 40, and preferably placing one hand 'upon the spring 16 which is now in the pocket and covered with the cloth 24, pulls the spring and cloth off from the device.

It will, of course, be understood that the details of the device may be varied within reasonable limits without departing from this invention.

Having thus described my invention,

drive the spring out of an opening in said receptacle, and frictional means adjacent to the opening in the receptacle adapted to control the action of the spring in the receptacle as it moves therefrom.

2. In a device of the class described, a cylindrical member adapted to receive a spring, means movable in the cylindrical member to eject a spring from one end thereof, flexible spring fingers extending from the said end of the cylinder forming normally a cone, but adapted to be expanded into a cylinder by said ejecting means.

3. In a device of the class described, a hollow cylinder open at one end, a piston and piston rod movable therein toward and from said open end of the cylinder,'a plurality of relatively long spring fingers extending from the open end of the cylinder converging together at their outer end, and means for attaching the open end of a cloth pocket placed over said spring fingers to the end of the cylinder, for the purposes set forth.

4. In; 'a device of the class described, a hollow cylinder open at one end, a piston and piston rod movable therein, and a cone made of a plurality of long and a plurality of intermediately placed short spring fingers attached to the open end of the cylinder, for the purposes set forth.

5. In a device of the class described, a

hollow cylinder open at one end, a piston and piston rod movable therein, and a cone made of a plurality of long and a plurality of intermediately placed short spring fingers attached to the open end of the cylinder, and means for securing the open end of a pocket over said cone, for the purposes set forth.

6. In a device of the class described, a cylinder open at one end, a piston and ton rod movable in said cylinder, a door in the side of the cylinder closing-the opening through which a springmay be inserted inside the cylinder, means for securing the open end of a pocket to be spring filled to the open end of the cylinder, and means frictionally resisting the ejection of the spring from the cylinder by said piston.

7. In a device of the classdescribed, a cylinder open at one end, a piston and piston rod movable in said cylinder, a door in the side of the cylinder closing the-opening 'through which a spring may be inserted inof a plurality of flexible spring fingers expistending from the open end of the cylinder, and means for attaching the open end of a pocket into which said cone is inserted to the end of the cylinder, for the purposes set 5 forth.

In witness whereof, I have hereunto sub- M. S. Rosnnzwnm.

DISCLAIMER.

1,218 314.- 0harZea Percy Read, Chicago, Ill. MAO'HINE FOB Pmcmo Seamus 1N (EABINGB. Patent dated March 6, 1917. Disclaimer filed December 5,1927,bv the assignee, Simmons Company.

Diaclaims from the scope of each and all of the claims of said patent, any machine except such as is used to insert into a. strip composed of a series of culmtclud upmended parallel cloth pockets, wire springs having a plurality of co-axiul spaced convolutions of diameter substantially fitting the pockets, and

Limits thescope of each and all of the 0181108 of said patent to machines such as are need to insert into a strip composed of a. series of connected open-ended parallel cloth pockets, wire springs having a plurality of co-axial spaced convolutions of diameter eubstantially fitting the pockets.

[OM01 0mm December 27, 1.927.] 

